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Allushta [10]
3 years ago
5

Nathan is saving up to buy a new phone. He already has $90 and can save an additional $10 per week using money from his after sc

hool job. How much total money would Nathan have after 4 weeks of saving? Also, write an expression that represents the amount of money Nathan would have saved in w weeks.
Mathematics
1 answer:
Galina-37 [17]3 years ago
5 0

Answer:

$130

Step-by-step explanation:

If Nathan already has $90 then you would add the amount of money collected after the 4 weeks. In each week he makes $10.

The equation would be $90+($10x4)= $X

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A study among first-year students at a state university showed that in general students who skipped more classes earned lower gr
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Answer:

The numerical value of the correlation between number of classes skipped and grade index is 0.60.

Step-by-step explanation:

In statistics R² is a measure that is used to determine the proportion of variation in the dependent variable that can be explained by the independent variable. The value of R² is compute by squaring the correlation coefficient (<em>r</em>) between the dependent and independent variable.

                                                  R^{2}=(r)^{2}

In this case the dependent variable is the grades and the independent variable is the number of classes skipped.

The R² between the grades and the number of classes skipped is 36% or 0.36.

Compute the value of <em>r</em> as follows:

       R^{2}=(r)^{2}\\r=\sqrt{R^{2}}\\ =\sqrt{0.36} \\=\pm0.60

Thus, the correlation between number of classes skipped and grade index is ±0.60.

4 0
3 years ago
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Answer:

A=35

Step-by-step explanation:

180-75=105, 105÷3=35, 35×2=70, 35+70+75=180

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Answer:

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Step-by-step explanation:

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